Outlet valve for tank cars



' H. P. WELLE OUTLET VALVE FOR TANK CARS Filed May 21. 1920 ssskiizsfi I0 142 2 I v/ 3 v Z A TTORNEYS.

Patented Get. 5, 1 925 UNITED Es ."HAL r. wELLnorKANsAs orrmemrssounr,ASSIGNOR or one-THI D To I I SWEARINGEN, .OFKANSAS CITY, MISSOURI.

,oU'rLErvALvE-FoR TANK, cARs.

Application filed May 21, i920. Serial No. 3s3,i4 9.f

To all whom it may concern:

-Be it known that I, HAL P. WELL'n, a citizen of the United States,residing at 'Kansas City, in the county of Jackson and State ofMissouri, have invented certain Y new i and useful Improvements inOutlet Valves for Tank Cars, of which the following isa full, clear, andexact description, such as vwillenable others skilled in the art towhich it appertains 'to make and'use the same. i

The invention relatesto outlet valves for railway tank cars and hasprovided an improved outlet valve for unloading tank cars of oil and thelike.

The present invention has provided an improved outlet valve for railwaytank cars that will remain seated, the vibration of the car cannotaffect it, foreign matter will not interfere with its closing, it doesnot require regrinding, and it does not extend into the outlet nozzle,so that wreckage of the car will not unseat the valve or cause it toleak.

With these and other objects in view the invention consists in thefeatures of construction, combination and arrangement of partshereinafter set forth and more particularly pointed out in the appendedclaim, the accompanying drawings illustrating a form of the improvedvalve mounted on a fragmentary view of a railway tank car.

In the drawings Fig. 1 is a fragmentary broken view of the tank of arailway tank car with the improved outlet valve mounted in operatableposition.

Fig. 2 is a vertical sectional view of the improved outlet valve takenon line 22 of Fig. 3.

Fig. 3 is a horizontal sectional view taken on line 3-3 of Fig. 2. r

Fig. 4 is the same view as Fig. 2, but with the movable portion of thevalve shown in full view and in open position.

The tank shell 1, dome 2, and outlet nozzle 3 represent a fragmentaryview of the tank of an ordinary tank car of common and well knownconstruction.

The valve casing 4 is cylindrical in form and provided with the annularflange 5 which lies between the outlet nozzle 3 and the shell 1, therivets 6 securing the outlet nozzle and valve casing securely to theshell so that no leakage can occur by the applicatlon.

The gasket 4 forms a tight joint between' the shell 1 and theannular'flange 5.of the casing 4 and eliminates caulking of the jointThe valve casing 4 is provided with the non-corrodible bushing 7 andtheannular ports 8 which communicate through thefshell and the bushing tothe outletnozzle when the valve is openas; in Fig.4. I i Theannularinternal flange 9 is provide-cl in the casing andbevelled as shownforming the seat 10, while the upwardly extending end of the casing isprovided with the thread 11 by which the head 12 is attached thereto,the set screw 13 looking the head so that it cannot become disengagedfrom the casing.

The head 12 is provided with the thread 14 in which is fitted theoperating screw 15, the screw being connected by the rod 16 to the handoperating handle 17 within the dome 2 and the rod 16 being guided andheld in position .by the bracket 18 which is secured to the dome at 19,the rod being revolvable in the bracket.

The lower end of the screw 15 is provided with the annular flange 20socketed in the recess 21 of the working valve 22 and held in revolvableposition therein by the recessed flange 23 and the bolts 24.

The working valve 24 is a smooth working fit in the valve casing 4- andis provided with the ordinary packing ring 25 and the seat 26 whichseats upon the seat 10 of valve casing, the working valve being shownclosed in Fig. 2 and open in Fig. 4..

The holes 27 are provided in the head 12 so that as the working valve 22is closed oil may follow the valve and not resist its closing and sothat the oil may be expelled as the valve is opened and not resist orprevent the opening of the valve; theseholes also provide for theexpansion of liquids in the casing in the event of freezing.

It is obvious that when the working valve 22 is opened as shown in Fig.4 there is a free passage for the oil to escape from the tank of thetank car through the ports 8 and the outlet nozzle 3, and the valvebeing a close working fit in the casing will force any foreign matter inthe casing downwardly into the outlet nozzle, the packing ring beingsufficient to prevent leakage while the seats 10 and 26 form a stop forthe valve so that it is known when it is closed, the seats also formingan extra safeguard against leakage.

The valve does not require regrinding as it will not leak if the seat 26does not fit the seat 10 perfectly.

No part of the valve extends into the outlet nozzle so that wreckage ofthe car and breakage of the outlet nozzle cannot cause the valve to leakand lose the contents of the, tank.

VVhat I claim as new and desire to secure by Letters Patent, is

In anoutlet valve for railway tank cars, a railway car tank, a hole inthe bottom of said tank, a cylindrical casing extending through saidhole into said tank, an annular flange'integral with said casing andbearing upwardly against said tank, an outlet nozzle with an annularflange onthe upper end thereof and bearing against the flange on saidcasing, rivets securing said flanges to said tank, an internal annularflange integral with said casing and approximately even with the bottomthereof and provided with an inverted frustrum shaped valve seat, portsextending through said casing laterally at some distance above saidvalve seat, a non-revolving trunk piston shaped valve in said casingwith the open end downwardly disposed and provided with a companioninverted frustruin shaped valve seat, said valve closing said ports andresting on said frustruni shaped seats when closed and a screw threadedrevolvable valve stem arranged to raise and lower said valve and toforce said frustruin shaped seats in closed contact, so that in closingsaid valve said ports are first closed by the body of said valve andthen said frustrum shaped seats are seated and in opening said valvesaid frustruni shaped seats are first sepa rated and then said ports areopened.

HAL P. WVELLE.

